package Class9_7;

import java.util.Scanner;

public class Work2 {
    public static void main(String[] args) {
        Scanner in=new Scanner(System.in);
        String a=in.next();
        if (a.endsWith("zip")||a.endsWith("rar")){
            System.out.println("合适");
        }else {
            System.out.println("不合适");
        }
    }
}
